High-pressure fluid-pump



H. G. GOSSELIN AND W. B. MAHERN.

HIGH PRESSURE FLUID PUMP.

APPLICATION FILED A.PR.28, i920.

Patented (m 19,1920.

4 SHEETS-SHEET I- H. G. GOSSELIN AND W. B. MAHERN. HIGH PRESSURE FLUID PUMP. APPLICATION manna. 2a. i920.

1,356,063. Patented Oct. 19,1920.

4 SHEETS-SHEET 2.

v 61cm nu;

H. e. GOSSELIN AND WE. MAHERN.

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3. I W 1 T 1 9, -s H E E Mara 4 SHEETS Patented Oct.

HIGH PRESSURE FLUID PUMP. APPLICATION FILED APILZB, 1920.

UNETED STATES PATENT OFFICE.

HENRY G. GOSSELIN AND WILLIAM B. MAHERN, OF BERLIN, NEW HAMPSHIRE.

HIGH-PRESSURE FLUID-PUMP.

Specification of Letters Patent.

Application filed April 28, 1920. Serial No. 377,307.

To aZZ whom it may concern Be it known that we, HENRY G. GossnLrN and l/VILLIAM B. MAHnnN, citizens of the United States, residing at Berlin, in the county of Coos and State of New Hampshire, have invented a new and Improved ligh-Pressure Fluid-Pump, of which the following is a specification.

Our invention has reference to multiple impeller pumps of that type that includes in their structural arrangement a plurality of impellers cotiperative with a common suction, an inclosing casing'into which is received the simultaneous discharge from the several impellers, combined with means for creating increased efliciency ofthe discharge from the said impellers, and our said invention primarily has for its purpose to provide an improved construction of pump of the general character stated that embodies the advantages of an economical, compact and simple cooperating arrangement of parts which are so designed whereby to provide a pump of high efiiciency and pressure.

With other objects in View that will hereinafter be stated, our invention consists in the multiple impeller pump consisting of the peculiar construction and novel arrangement of the parts set forth in the following detailed description, specifically stated in the appended claims and illustrated in the accompanying drawings, in which:

Figure 1 is a side elevation of a high pressure fluid pump in which is embodied our invention.

Fig. 2 is a vertical central longitudinal section thereof taken on the line 2-2 on Fig. 3 and illustrates a preferred arran e ment of the revolving impellers or vanes and the stationary impellers or vanes.

Fig. 3 is a top plan view of the pump structure shown in Figs. 1 and 2.

Fig. i is a transverse sectionof our pump taken substantially on the line 44l on Fig. 2.

Fig. 5 is a section taken substantially on theline 55 on Fig. 2.

Fig. 6 is a detail vertical section of the modified form of our invention'inwhich is embodied a single inner revolving impeller and an outer stationary impeller that encircles the inner impeller as hereinafter more definitely stated.

Fig. 7 is a diagrammatic'side elevation of the inner and outer impellers shown in Flg. 6.

Fi 8 is a diagrammatic view that illustrates the relative shape and cooperating positions of the blades of the two impellers shown in F igs, 6 and 7.

In the practical development, of our invention and in the preferred arrangement thereof, as illustrated in Figs. 1 to 4:, in.- clusive, a shaft 1 is revolubly mounted in a pair of upright bearings 2-2 mounted on sub-bases 3, the base portions at'each end being secured. upon a main base 4, in any suitable manner, and at a point midway each set of bearings 22, the shaft section 1 that is mounted therein, is provided with fast and loose pulleys 550, as shown.

At a point, preferably midway the subbases 33, is mounted the pump mechanism proper, the construction of which is best shown in Figs. 2, 3 and i, by reference to which it will be seen that a pair of im-' pellers 6 are keyed or otherwise fastened to and are oppositely disposed on the said shaft and the said oppositely disposed impellers 6-6 are located, one at each side of a centrally disposed stationary impeller 9 with which the revoluble impellers cooperate and from which the drawn and impelled fluid passes into the pump discharge, which latter in our construction of pump is in the nature of an annular chamber or shell 7 provided, at one side, with an outlet 8, as is best shown in Fig. 4:. 1

The shell 7 is formed with a central restricted annular passage 7 Othat is in communication with the peripheral edge of the inner or stationary impeller 9 and it also includes lateral portions 71, each provided with an annular flange 72, the purpose of which willpresently appear.

By referring more particularly to Figs. land 4, it will he observed that our pump structure includes what is hereinafter termed asuction shell, one of such shells being located at the outside of-each of the oppositely disposed revolving impellers and each of the said suction shells is of conical shape with its base portion provided withan annular flange 11 for bolting onto the flanges 72 at their respective sides of the annular shell or casing 7, the latter inclosing the peripheral edges of the several impellers, as is clearly shown in Fig. 1.

Each suction shell includes an internal or base member 12and the latter is also of Patented Oct. 19, 1920.

conical form but it is so angled with respect to the outer conical portion of the said vacuum shell that a restricted annular discharge 13 is provided that communicates with the annular rim of impelling blades M that are secured to the impeller body 6, it being understood that the discharge end 13 of the left hand suction shell communicates with the adjacent left hand impeller 6 and the discharge 13 of the other or right hand suction she ll communicates with his adjacent impeller 6.

l5 designates the main suction pipe or inlet and it connects with a U-shaped suc tion head 16, the opposite ends l6-16 of which have clamp rims for attaching thereto the suction pipes l'717, which latter communicate with the suction shell, at their respective ends of the pump, as is best shown in Fig. 3.

Each of the revoluble impellers, at the peripheral edge thereof, carries a serles of radially projected steel blades or vanes 14 and these extend across their respective peripheral impeller body edges at an angle of approximately forty-five degrees and the said blades of the oppositely disposed impellers are so positioned relatively to their respective body members so as to deliver the incoming fluid at high speed through a series of intake passages of comparatively small area and against a series of stationary vanes in the nature of steel blades 20 that are attached to and radially projected from the inner or stationary member 9.

To further increase the force of the fluid passing through the numerous intake passages, as stated and shown, the stationary blades are so shaped that while adapted for receiving the full force of the fluid impact thereagainst they also serve to directthe fluid as it discharges into the annular passage to the discharging compartment or shell that connects with the pump outlet.

The stationary impelling blades in face view are Vshaped, the section at one side being disposed at an angle to the peripheral face of the central impeller body and diametrically opposite to the line of angle of the blades of the revoluble impeller at the adjacent side of the said stationary impeller, the other sections of the saidV-shaped blades being likewise angled with respect to the coincident blades on the revoluble impeller at their adjacent side of the stationary impeller.

2l21 designate brace or stay members for rigidly holding the inner and outer conical portions of the suction shells together, and the outer end of each suctionshell terminates in a flattened head 75 in which is mounted a stuffing box and gland 22-23 for the shaft that carries the revoluble impellers. The inner end of each of the conical members has an aperture 77 through which the pump shaft sections freely pass, as shown.

From the foregoing taken in connection with the drawings, the complete construc tion, the manner of operation and the advantages vof our invention will be readily apparent to those skilled in the practical use and handling of pumps of the character mentioned.

The water that is drawn into the inlet is divided and passes into the two oppositely disposed suction shells and when entering each of said suction shells the water is centrifugally directed to the annular discharges 13 through which the water passes laterally with respect to the otation of the oppositely disposed revoluble impellers and strikes the blades 14. The outside impellers 6--6 travel in the direction of the arrows a-a. The fluid that passes toward the impeller blades 20 engages the inwardly inclined faces of the said blades in such matter that outgoing fluidis directed under great speed and pressure into the annular shell or chamber 7 from which the fluid passes through the pump outlet, it being understood the peculiar construction and cooperative arrangement of the revolving impellers and the stationary impeller blades is such that the intake capacity of the pump is materially multiplied and a high speed and ]pressure ump of great efliciency is providec. whose motive power is greatly increased by reason of the manner in which the indrawn fluid is caused to engage with and pass through the impeller vanes or blades, to a common passage that leads to the pump outlet.

In Figs. 5 tot) is illustrated a somewhat modified form of our invention. In'this latter form, a centrally disposed impeller 30 is mounted to turn with a shaft 35 and the blades on the said impeller are shaped and peripherally mounted on the impeller body the same as in the central and stationar impeller shown in our other form describe it being understood, by referring toFig. 6, that the indrawn fluid, as it passes through the annular passage of the suction shells, en-

gages the vanes or blades of the revoluble impellers and causes such impellers to revolve with the shaft in the direction of the arrows Z)=Z) and pocket the fluid that enters from the opposite sides and directs it, under considerable impact, against .and through the passages between the fixedly held outside impellers (see arrows 0- 0 on Fig. 5) and into the annular chamber that receives the discharge fluid and from which the said fluid passesto the pump outlet.

In the modified form, as also in the preferred form beforedescribed, the inner conical portion of thesuction shells prevent the water drawn into the said shells from rubbing against the center of the impellers and thereby prevents friction and consequent sc loss of power particularly when the impellers are arranged as in the preferred form shown in Figs. 1 to 4.

What we claim is:

1. In a centrifugal pump the combination with an impeller mounted on ashaft and revoluble therewith, the said impeller having radial blades angularly disposed with respect to the peripheral edge of the impeller, a casing surrounding the impeller and including an annular passage having an outlet, the said passage being in communication with the rim of the impeller, an annular rim of deflector blades interposed between the impeller rim and the said annular passage, the blades of which are dis-' posed at an angle opposing ,the angle of the impeller blades, and a fluid intake in communication with and through which the fluid is directed to the bladed periphery of the impeller. i

2. In a centrifugal pump the combination with an impeller mounted on a shaft and revoluble therewith, the saidimpeller having radial" blades angularly disposed with respect to the peripheral edge of the impeller, a casing surrounding the impeller and including an annular passagehaving an outlet, the said passage being in communication with the rim of the impeller, an annular rim of deflector blades interposed between the impeller rim and the said annular passage, the blades. of which are disposed at an angle opposing the angle of the impeller blades, and a fluid intake in communication with and through which the fluid is directed to the bladed periphery of the impeller, the said intake including a suction shell having an annular peripheral discharge and means for directing the indrawn fluid toward the said annular peripheral discharge, the latter being in communicationwiththe bladed periphery of the impellen and adapted for directing the fluid laterally across the said bladed rim.

3. In a centrifugal pump, the combination with a stationary impeller having an-v nularly disposed radially projected blades, a shaft, other impellers revoluble with the shaft, one of the said other impellers being located at each side of the stationary impeller, each of the said revoluble impellers having radially projected blades, a casing having an annular fluid passage in communication with the stationary impeller rim and having a single discharge outlet, a suction shell located, one at the outer side of each of the revoluble impellers, a fluid inlet to each suction chamber, means within each suction shell for directing the incoming fluid to discharge laterally against the blades of" their adjacent revoluble impellers, the blades of the revoluble and the stationary impellers being relatively so disposed whereby fluid entering from opposite sides is deflected under impelled force into the aforesaid annular fluid passage.

4. In a centrifugal pump, a pair of oppositely facing revoluble impellersmounted on and movable with a shaft, a stationary impeller located between the revoluble impellers, the peripheries of all of the impellers having radially extended blades, the said blades being angularly disposed with respect torthe peripheral faces of their respective impeller bodies, the blades of the revoluble impellers being angled in opposite directions to each other, and the blades of the stationary impeller being angled in reverse direction to the blades at the adjacent abutting faces of the revoluble impellers, a casing that surrounds the several impellers and has an annular water chamber that extends around and in communication with the bladed rim of the stationary impeller, the said annular water chamber havrevoluble impeller, an intake for each suction chamber and means within each suction chamber for directing the indrawn. water to discharge laterally across the bladed rims of their respective revoluble impellers,

5. In acentrifugal pump, a shaft, a pair ofimpellers mounted on the said shaft and revoluble therewith, a stationary impeller located between the revoluble impellers and ing an outlet, a suction chamber for each in close relation therewith, a casing having;

for impelling the incoming fluid against the blades of the stationary impeller, the blades of the latter being arranged for directing the fluid into the annular fluid passage in the casing, the latter having a discharging outlet.

6. In a centrifugal pump, a shaft, a pair of impellers mounted on the said shaft and revoluble therewith, a stationary impeller located between the revoluble impellers and in close relation therewith, a casing having an annular fluid passage in communication with the rim of the stationary impeller, a suction chamber outside of each of the said revoluble impellers, each of the said suction chambers having a fluid inlet and an annularly disposed outlet for discharging the fluid laterally across the rims of their adjacent revoluble impellers, the said revolur blades of the stationary impeller, the blades cl the latter being arranged for directing the fluid into the annular fluid passage in the casing, the latter having a discharging outlet, at single inlet' in communication with the inlets to the two suction chambers, the latter each having means for directing the indrawn fluid toward and through their annular passages in communication with their respective impeller rims.

7; In a centrifugal pump, ashaft, a pair of impellers mountedon the said shaft and revoluble therewith, a stationary impeller located between the revoluble impellers and in close relation therewith, a casing having an annular fluid passage in communication with the rim of the stationary impeller, a suction chamber outside of each of the said revoluble impellers, each of the said suction chambers having a fluid inlet and an annularly disposed outlet for discharging the fluid laterally across the rims of their adjacent revolubl'e impellers, the said revoluble and stationary impellers having radially and angularly disposed blades arranged for iinpelling the incoming fluid against the blades or" the stationary impeller, the blades 0% the latter: being arranged for directing the fluid into the annularfluid passage in the casing, the latter having a discharging outlet, each of the suction chambers comprising an outer fixed conical shell and an inner nxed conical body that covers the adjacent face o't'its cooperating revoluble impeller, the peripheral edges of the inner and outer conical members of the suction chambers being separate to provide an annular water passage for directing the fluid discharge from the suction chamber laterally through the bladed'rims of their respective cooperating revoluble impeller.

8. Ina centrifugal pump, a shaft, a pair of impellers mounted on the said shaft and revolubl therewith, a stationary impeller located bet veen the revoluble impellers and in closer-elation therewith, a casing having an annular fluid passage in communication with the rim of the stationary impeller, a suction chamber outside of each of the said revoluble impellers, each of the said suction chambers having a fluid inlet and an annularly disposed outlet for discharging the fluid laterally aeross the rims of their adjacent revoluble impellers, the said revoluble and stationary impellers having radially and angularly disposed blades arranged for impellin'g the incoming fluid against the blades of the stationary impeller, the blades of the latter being arranged for directing the fluid into the annular fluid passage in the casing, the latter having a discharging outlet, the blades of the stationary impeller being V-shaped and the blades of the opposite revoluble impellers being angled in a direction opposite to their respective adjacent portions of the V-shaped blades on the stationary impellers;

HENRY G. GOSSELIN. WILLIAM B. MAHERN. 

